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Old 10-30-2011, 20:29   #21
Chuck_Glock
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Join Date: Jun 2009
Location: Montevideo,MN
Posts: 83
Silhoutte Load Data

I've been using Silhoutte for about 2 years now. I like it and I feel it doesn't get a fair shake from some. It serves my purpose and it always seems to be available. Always. Can't say that about some of the more popular powders.

So, I present to you the load data that I acquired today while at the range. I suspect a few of you will have the need to opine about the loads being a little hot. Please refrain from doing so as I am well aware of all that I am doing and feel comfortable doing so. Bear in mind that Ramshot's loading guide lists 8.4 grains as their max load for 180 gr. bullets. Surprisingly, my average velocity is damn near identical to what Ramshot lists for 8.4 gr. The resulting pressure for said load is 34,400 psi. Kinda sucks because the "10" is rated to 37,500 psi but can withstand up to 42,900 psi. I say that cautiously and prefer not to argue the point. The brass is slightly bulged with the loads at 9.0 gr. and larger and I will be able to resize fairly easily. No worries here. Been there, done that.

Today's testing was accomplished using my G20 with a Lone Wolf Barrel (stock length) along with a 22# recoil spring riding on a stainless steel guide rod. Cases are Starline shooting 180 gr. Hornady XTP JHP. The chrono is a model F1 Shooting Chrony. Distance from chrono was 6 feet. Ambient temperature was 45 deg. with overcast skies. C.O.L. were set at 1.258" - 1.259" WLP primers are employed to light the fire.
As a disclaimer I must inform you that these loads are what I use (and have used) and in no way do I take responsibility if you blow your s**t up! Proceed with caution.
So here we go. Let the chips fall where they may.

8.4 Grains
1197
1201
1205
1211
1219
1225
Avg. 1209.66 (Silhoutte specs out at 1210)
S.D. 10.78
E.S. 28

8.6 Grains
1224
1225
1245
1248
1249
1256
Avg. 1241.16
S.D. 13.4
E.S. 32

8.8 Grains
1259
1264
1267
1272
1279
1280
Avg 1270.16
S.D . 8.37
E.S. 21

9.0 Grains (This is my do-it-all load I use for hunting, plinking, etc. Developed this by trial and error and without the benefit of a chrono.)
1261
1264
1276
1278
1279
1281
Avg. 1273.16
S.D. 8.47
E.S. 20
(It appears that this load is damn near identical to 8.8 grains. I will need to retest this spring to verify these two loads.)


9.2 Grains
1274
1289
1295
1296
1302
1302
Avg. 1293.00
S.D. 10.50
E.S. 28

9.4 Grains
1300
1303
1309
1310
1319
1320
Avg. 1309.16
S.D. 7.13
E.S. 20

9.6 Grains (This load looks promising)
1327
1327
1330
1331
1337
1339
Avg. 1331.83
S.D. 5.07
E.S. 12

9.8 Grains
1340
1347
1348
1355
1356
1359
Avg. 1350.83
S.D. 7.08
E.S.19

10.0 Grains
1341
1349
1351
1361
1364
1367
Avg. 1355.00
S.D. 10.07
E.S. 26
Not gaining much here over 9.8 grains.

Double Tap 180 Gr. JHP 1350 FPS
(Yeah Right)
1254
1257
1274
1287
1290
1301 --- Nice try, but not even close to 1350
Avg. 1277.16 - Not Bad
S.D. 18.88 - The worst of all strings fired.
E.S. 47 - Same here.

In all fairness the D.T. rounds performed as expected coming from a mass producer of ammunition. No surprises there. Hence one reason, of many, that we like to load our own.

I plan to re-run these tests if the weather conditions will be close to what they were today. But that probably wont come to fruition until spring. Deer season is upon us (next weekend).
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Old 01-02-2012, 06:52   #22
ragsflh
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Posts: 40
loaded some true blue up and started new yr right. 9.2 gr blue,180gr jhp mon.gold,wlp primers col 1.250 chony dieds anyways good shooting,clean burning.also zip works great too.
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Old 11-24-2012, 22:57   #23
RDub01
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Join Date: Aug 2012
Location: So Oregon
Posts: 69
Hi
Shot some 180gr SpeerTMJ's through a G20-SF with Ramshot Silhouette powder.
Glock 20SF with factory barrel and spring
Rounds were seated to1.26” COL
Circles are 5½” at 25yards
Shooting was done off of a Caldwell Pistol Rest
Velocities taken with an Oehler Mod 33 chronograph. Skyscreens centered 8’ from muzzle.

Data on targets;
Average velocity
Velocity spread
Standard deviation
temperature



10mm Reloading Forum



SILHOUETTE

Ramshot is listing 8.4grs as a maximum load with a 180gr bullet. Case expansion is indicating this is a rather mild load. Watching expansion I took Silhouette up to 9.0grs. Four of five cases at 9.0grs showed acceptable expansion, except the one .4345”, which is where I stop.

8.4grs .4337, .4334, .4331, .4334, .4333
8.6grs .4334, .4333, .4331, .4337, .4336
8.8grs .4339, .4341, .4335, .4342, .4336
9.0grs .4336, .4345, .4342, .4338, .4341

Last edited by RDub01; 11-24-2012 at 22:58..
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Old 07-16-2013, 14:26   #24
CaptainXL
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Join Date: Nov 2009
Location: Illinois
Posts: 298
Quote:
Originally Posted by Tito View Post
Thanks!

How much muzzle flash do true blue and enforcer have?
Haven't used TB in 10mm but it is my favorite powder and most accurate powder for 9mm. Have also used it in .40SW but it is not my most accurate powder in .40's.

TB meters exceptionally well, is very clean and very low flash.
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